(3LhGgQ GdcdGe aj YbGjO Ggd GdGSdGe (B/s - (3GdeOQS, YHO GdcQje s ((3HZOGO(B[(3GdYQGb(B] : s (3OGQ GdMQjI ddWHGYI, s, 1993)
Keywords: (3Yde GdcdGe s